…Because with how stealthy the metal-eaters were, it wasn't shocking that they easily got past all border patrols! They could even travel underground.
The only thing that prevented them from spreading too wide, I realized, was their land speed.
I saw it clearly when the metal-eater released into a forest clearing began slowly crawling away from me and the small team that came to observe and test my new method of searching.
If I wanted to, I could catch up with the metal-eater at a relaxed walking pace. And it wasn't just because of its wounds or exhaustion! It just had a very low agility.
This made me wonder how long was the life cycle of the Spotted Mountainboring Beetle, and how dangerous the adult beetles were compared to larva. With how radical metamorphoses of insects could be, there was no way to tell.